Carbureter.



H. OQCRAVEN.

GARBURETER. APPLIUATION FILED MAR. 29. 100e,y

APatent@Apr. 121910,

Hl OQGRAVBN.

GARB'URETER.

APPLIOATXON FILED MAR. 29.1909.

rammed Apr. 12, 19.16.v .Y

4 SHEETS-SHEET 3..

' speciiication. l l 'The invention relates` to carbureters for, mixing hydrocarbon and air t produce gas The principle of the invention is to actu-A able casing, by ressurev variations produced" To all iohomit may concernj Be it known that I, HORACE O. CRAvEN', p a citlzen., of the United States, residing at HORACE o. cnAviiN, or soHENnc'rAnY, NEW YORK.

GARBURETER..

Schenectady, in the county of, Schenectady and State of New York, have invented. a certain new' and useful4 Improvement in Garbureters, of'A which the following .is a

for internal combustion motors.l

vate a movablel member,` disposed in al suit-v in the mixing c amber by the suction of the motorgand to cause saidj member, through suitable mechanism, to .controlboth the -valve for admitting air 'and the-valve for .ad-V

which the diaphragm is y actuated` by theldifferential f between atmospheric and` the mixm is a sideeleva'tion ofmy carbur'eter. Fig. 40

' differential and as the iaphragm controls both valves.,1 the extent of itheir opening will depend upon" the extent of movement of the diaphragm,

mitti'ig h d'rocarben to saidchamber. The

said in em er is preferably a kdiaphragm dise posed in` a -compartment'of the casing, which compartment communicates with the mixing chamber and with the atmosphere, and in chamber pressure. The position taken y the diaphragm at any 4instant is that due to the vcounterba'lancing of said essure by an adj ustablespring,

whilethisin turn depends upon thel suction of the motor.` f

The invention is embodied in the In the accompanying drawings-Figure 1 isa longitudinal section. Fig. 3 is alongitudinal section' on the line 16,93, of Fig. 2.

Fig. "4 is an elevation of the ri ht hand end of the apparatus as shown in ign'l.l` Fig. 5

is an end elevation of the right hand end on the line z, .2, of Fig. 3. tion on the line y, y, of Fi 3. i

. in section the relation of t e rincipal oper- `parts bein p l is an end view of the box for containin-g thev of the apparatus., as shown in Fig. 3, with' the cover plate removed. F' 6 is a Asection i 7 is a secg. 8fshows ating members of the. mec ansm, vother removed for clearness. Fig. 9-

.coiled I spring, with the coverin -disk removed.' Fig. l0 is a section on w', of Fi 9.' Fig. 11 shows hiiurcate spring plate.`

e line-', separately the Speci-eation of yLetters Patent. Application led March 29, 1909.- y".SerialN'o. 483,315. i

the gland 1 gland 8 andi-ing 2 variousl .combinations more particularly set forth inthe claims.

Patented Similar.lettersand numbers of indicatelike parts. y

reference Apr-12, 1,919? l Ay is a cylindrical casing, 'il with l' the usual coupling at one end or attachment to a gas engine or like motor,`which creates vthenece'ssary suction. NearA said end 1s a ivoted throttle valve B, which is operated i y hand to control the gas flow from the mixing chamber O to the motor.v

The source of gasolene or other'hydrocarbon is to betconnectcd to the t'hreadedend of a pipe'section C, Fig.3, which passes rthi' ugh and has itsjvanged end received `wit in a threaded gland 1I, which in .turn

enters a threaded flanged ring 2, Vwhich ring enters the threaded anged rojection 3 ony casing Af The bore'fof pipe is ared lat its end to receive the frustoconical extremity of an enlargementl 4 of the tubular' valve chain.y ber 5. A. Bange 6 on valve chamber 5 is ref` cived in an` annular recess in ring 2', and

vsecured to` said ring by a bolt.- The valve` chamber 5 'extends across the casing A v.and

thro h the4 wall thereof, and is threaded atl its en to receive the-gland 8. By removin the pipe' C-can be disconnecte.

from t-he valvechamber', By re'rn'ovin the l the tubularvalve c4 amer 5, afterthe valve-therein has been d15- can be removed from the casing. Within las connected from its operating mechanism,

theenlargement 4 the bore of the valve' 'I chamber is diminished, but in the remainder .ofV said chamber, saidbore' isinereased in diameter and receives the valve D. .In the wall of .saidk chamber nearxsaid enlargement are made aHnumber of small .openings 7` through which the gasolene is permitted to l pass .into the casing A'tlo mixgin fine jets? with the incoming air. The openings 7 are disposed successively, so that .as the valve' `D is moved away from its seat, a progressively greater' number of said openings` will be ,uns K covered,- and hence the amount .of criteri 19e gasolene will be constantly varied inwacco -y ance as the position of said valvechangesto f uncover more 4or less of said openings.v n v `Air tov be mixed with thehydroca'rbonisy caused to enterI the kapparatus as fol-lows: Casing A is enlarged at lts end to receive the circula-r flanged diskor cup E which is i closed' by the cover plate 10 bolted to 1u on the casing. Secured to the inner perip c ry .of the an e of disk E, by screws 11, (Fig.

5) is a fine radial partition F,the inner end of which` i's'made suitably concave to bearV against the shaft G which extends throligh I the disk E and also through thecover plate 10. In the disk E is an opening H which may be provided with a threaded bushing, and on the shaft G within the inclosed cylindrical chamber formed between-r disk E and vcover plate 10, is a radial' diaphragm I. In

the cover plate 10 isan opening J communieating with the atmosphere. The relative location of the opening J tothe'openng H is such that they are von opposite sides of the fixed partit-ion Fg'so that when suction occurs through H, the air entering through J acts on the side of diaphragm I, opposite to that on which I-I is located, so as to swing the diaphragm from left to right in Fig. 5. Mounted on the exterior of said plate is a boxV 12 containing a coiled springK, one end gbf whichis 'connected to the` box, and the .s .29;

`other end to said shaft G.

" The box is connected to the cover plate l0 in the following way: The disk 13, which forms the coverof the box, being removed, a

circular central opening in the bottom of the box is placed over the circular projection 14 on the cover plate 10. v A bifurcated spring plate 1 5, Figs. 9, l0 and 11, is then placed in Aa groove on said projection, Aand over this plate a flat tightly fitting ring 16,' F 3, is applied. By reason of this construction, the box -12 maybe rotated on projection 14 so as to windu the spring J, and may be held by means o the ratchet teeth 17 on its exterior, and the spring pawl 18 engaging with said teeth and Vpivoted in a bracket 19 which is secured on the 'exterior of the case by the screws 11. The main air inlet openingL 1s vformed in the circumferential wall of casing A. It is opened and closed by Ymeans of the arc-shaped valve M within said casing, which valve is carried by a spider 20, the central sleeve of which receives the shaft G and is "I vsecured thereon. Fig. A2.

. Wall of tubular valve chamber 5.

, The' operation of the whole apparatus can now be followed: Suction from the engine creates vacuum in the space between partition F and one side rof the movable diarphragm I, Fig. 7. Air entering through the phragm and the other side of partition F,

opening J into the space between said dia# the'diaphragm is caused to move, say from the position shown in dotted lines, Fig. 5, to the position shown in full lines. This movement is against the resiliency of the l"fcounterbalancing coiled spring K1 which is .previously set to any desired tension. Upon the extent of movement of the diaphragm I, which 1s Vdependent upon pressure'variation in the mixing chamber O, will,a1so depend the extent of movement of valve M, and hence the extent ofopening of the main air sThe gasolene valve D being assumed as normally closing the openings 7, it

also follows that the extent of movement of said valve tol-uncover more or less of said o enings will also depend upon the extent oi) movement of diaphragm I, since the same partial rotation of the shaft G, which actuates the mainA airvalve M, also actuates the cam plate P to operate the gasolene valve, It' is to be observed, therefore, that the suction of the engine counterbalanced by the the mixture which passes the valve B to Vthe engine do not vary. The total amount of gas ldelivered depends on the suction ex-l erted, and hence on the pressure variation in the` mixing chamber, and hence on the demands of the Amotor.- L

In order to regulate they initial area of the air inlet L, I providea movable arc-shaped coverN having a flange entering the inlet openingand bearing on the spider 20. Opposite one of the lugs on the casing which receive the fastening screws 23 for vthe cover to extend more or less over the air inlet L Ifit stops, air inlet and gasico , head, the cover N may be slid on thecasing and thus reduce the area of said inlet as may i be desired. f

In order'to afford convenient access to the mixing chamber O, I provide an opening in thecasing 'wall and a removable threaded cover 27 therefor.

I claim: I

1. In a carbureter, a cylindrical casing having an outlet, and air and hydrocarbon inlets, a tube extending diametrically across said casing, closed at one end, communicating with said hydrocarbon inlet at the other end and havingl openings in its wall, a cylindrical valve insai'd tube, and a rotary member in said casing connected to said valve and controlled by differences of pressure therein to actuate said valve.

2. In a carbureter, a cylindrical casing having an outlet, and air and hydrocarbon Kinlets 1n its Wall, valves controlling said inhavin inlets in its Wall, valves in said inlets, a parlets, and a rotary member in said casing conn nected to said valves and actuated by ressure variations therein to control bo of said valves. I

3. In a carbureter, a casing, having an outlet, an inlet for hydrocarbon, and an inlet for air, a central rotary shaft in said. casing, a valve controlling said hydrocarbon inlet and connected to said shaft, a movable meinber in said casing-actuated. by pressurey Variations therein, and mechanism for transinitting motion from said member to'said shaft to actuate said hydrocarbon inlet valve. v i 4. In a carbureter, a casing, a mixing chamber therein having an outlet, a valve controlling the admission of air and a valve controlling the.` admission of hydrocarbon to said chamber, a central rotary shaft in said casing, mechanism connected to said shaft to actuate both of said valves, and a ymovable member on said shaft actuated by pressure variations in said chamber.

' 5. In a carbureter a cylindrical casing an outletyand air and hydrocarbon tition in said casing forming a compartment therein, the said compartment having an opening in said artition communicating with. the main portion of the casing, and an opening in the casing end lcommunicating with the atmosphere, a central lrotary shaft extending through said casing and actuating both of said inlet valves, a `radial dia liragm in said compartment carried by sai shaft,

and a xed radial partition in said compart- -inent.: the said'compartment openings being located on o posite sides o iameter l drawn throng said radial artition.l

6., In a carburetor, a cy indrical casing having an outlet, and air and hydrocarbon inlets 1n its wall, valves in said inlets, arotary member in said casing connected to said valves actuated by pressure variations therein, and avolute spring disposed outsidev of iid casing and counterbalancing said memr.V *7. In s, carbureter. having an outlet, and airA and hydrocarbon Ahaving an outlet, an

casing, a rota said casing an '-compartment, a spider on a cylindrical casing.

valves and actuated by ressure variations therein, a volute spring isposed outside of said casing and counterbalancing said inem-- ber, and means for' regulating'the resiliency of saidspring. Y

8.- In a carbureter, a cylindrical casing having an outlet, and air and hydrocarbon inlets in its Wall, a transverse forming a compartment at one en casing, a rotar said casing an compartment, a spider on said shaft, anv arc-shaped valve carried by said spider and controlling said air inlet, anda movable ,member fast on said shaft and located Within said compartment and ports in the partition and casing arranged to ermit 'the actuation of said movable memr by diierential ressure in said compartment to control said air inlet.

9, In a carbureter a cylindrical casing d .air and hydrocarbon inlets 1in its Wall, a transverse artition forminga compartment at one en of said shaft 'axially disposed -in of said saidshaft, an arcfshaped valve carried by said spider and controlling said airinlet, .and a movable member fast on said 'shaft and located Within said compartment and ports in thepartition and casing arranged to artition shaft axially disposed in rmit the actuation -of Ysaid movable mem- Y. er by differential pressure in said compartment to control both of said inlets.

10. In a carburetei, a casing, having an outlet, an inlet tor air, and an inlet `for hydrocarbon, a reciprocating valve controlling said hydrocarbon inlet, .a central rotary shaft iii said casin a movable member `same by pressure'variations in said casing, a cam plate on said shaft', and a pin on said valve engaging said cam plate.

In testimony whereof I have aixed my vsignature in presence of tivo witnesses.

HORACE o. CRAVEN.

fast on saidfshaft an actuated to rotate the 4 

